Xyloglucan:xyloglucosyl transferase

xyloglucan:xyloglucosyl transferase
Identifiers
EC no.	2.4.1.207
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / QuickGO
Search PMC articles PubMed articles NCBI proteins

In enzymology, a xyloglucan:xyloglucosyl transferase (EC 2.4.1.207) is an enzyme that catalyzes the chemical reaction in which a beta-(1,4) bond in the backbone of a xyloglucan in broken; the xyloglucanyl segment is then transferred to the O₄ of the non-reducing terminal glucose residue of either xyloglucan or an oligosaccharide thereof. ^[1]

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is xyloglucan:xyloglucan xyloglucanotransferase. Other names in common use include endo-xyloglucan transferase, and xyloglucan endotransglycosylase.

Structural studies

As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes 1UMZ and 1UN1.

References

1. Thompson, James E.; Fry, Stephen C. (2001). "Restructuring of wall-bound xyloglucan by transglycosylation in living plant cells" (PDF). The Plant Journal. 26 (1): 23–34. doi: 10.1046/j.1365-313x.2001.01005.x . PMID   11359607.^{[ permanent dead link ]}

• Fry SC, Smith RC, Renwick KF, Martin DJ, Hodge SK, Matthews KJ (1992). "Xyloglucan endotransglycosylase, a new wall-loosening enzyme activity from plants". Biochem. J. 282 (Pt 3): 821–8. doi:10.1042/bj2820821. PMC   1130861 . PMID   1554366.
• Nishitani K, Tominaga R (1992). "Endo-xyloglucan transferase, a novel class of glycosyltransferase that catalyzes transfer of a segment of xyloglucan molecule to another xyloglucan molecule". J. Biol. Chem. 267 (29): 21058–64. doi: 10.1016/S0021-9258(19)36797-3 . PMID   1400418.
• Foucher AL, McIntosh A, Douce G, Wastling J, Tait A, Turner CM (2006). "A proteomic analysis of arsenical drug resistance in Trypanosoma brucei". Proteomics. 6 (9): 2726–32. doi:10.1002/pmic.200500419. PMID   16526094. S2CID   24074942.
• Lorences EP, Fry, SC (1993). "Xyloglucan oligosaccharides with at least two alpha-D-xylose residues act as acceptor substrates for xyloglucan endotransglycosylase and promote the depolymerisation of xyloglucan". Plant Physiol. 88 (1): 105–112. Bibcode:1993PPlan..88..105L. doi:10.1111/j.1399-3054.1993.tb01767.x.